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SPARK PLUG
ATTENTION: If the spark plug is damaged (cracked insulator, broken or eroded electrodes etc),
replace it. Always use spark plugs of the correct "heat range".
The spark plug is used to ignite the air/fuel mixture inside the engine. The spark
plug has electrodes on one end and an electrical terminal on the other. The
spark plug requires regular maintenance.
SPARK PLUG CLEANING AND GAP CHECKING
The spark plug should be checked and cleaned as per the maintenance schedule.
1.
Remove any carbon deposits on the spark plug (A) electrodes (B) with
a wire brush.
2.
Clean the spark plug threads and the electrical terminal (C) on the top.
To check and adjust the spark plug "gap":
1.
Use "feeler" or "thickness" gauges to measure the existing gap. The
gauge must drag a little when being slid between the electrodes (B) –
this means the measurement is fairly accurate.
2.
Adjust the gap to within specification (see Specifications). If the gap needs to be reduced, gently tap the
electrode as required. If the gap needs to be increased, use pliers to gently pull the electrode as required.
3.
Measure the gap again and ensure it is within the specified range before re-installing the spark plug.
TO REMOVE THE SPARK PLUG
1.
Pull the cap (B) of the electric cable (A)
2.
Clean the area around the spark plug so that no dirt or other materials can enter the engine when the plug
is removed.
3.
Use the spark plug tool (C) to remove the spark plug (turn counterclockwise).
TO REASSEMBLE THE SPARK PLUG
1.
Place the spark plug in its hole and screw it in (to the right) until it is tight enough.
2.
Use the spark plug tool to tighten the spark plug by approximately a quarter turn (no over threading)
3.
Place the electric wire over the spark plug and push it down so that it connects firmly to the terminal.
REPLACING THE FUSE
•
The electric starter is protected by a 5 A fuse.
•
Never use another fuse or bypass it.
•
Locate the fuse under the forward/reverse switch.
B
A
C